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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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3b73cfe559
Like other fixes, convert the tasklet to a threaded irq and replace spinlock with mutex appropriately. ak4117_lock remains as spinlock since it's called in another spinlock context from ak4117 driver. Signed-off-by: Takashi Iwai <tiwai@suse.de>
141 lines
5.2 KiB
C
141 lines
5.2 KiB
C
/*
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* Driver for Sound Cors PDAudioCF soundcard
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*
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* Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __PDAUDIOCF_H
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#define __PDAUDIOCF_H
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#include <sound/pcm.h>
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#include <linux/io.h>
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#include <linux/interrupt.h>
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#include <pcmcia/cistpl.h>
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#include <pcmcia/ds.h>
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#include <sound/ak4117.h>
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/* PDAUDIOCF registers */
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#define PDAUDIOCF_REG_MD 0x00 /* music data, R/O */
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#define PDAUDIOCF_REG_WDP 0x02 /* write data pointer / 2, R/O */
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#define PDAUDIOCF_REG_RDP 0x04 /* read data pointer / 2, R/O */
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#define PDAUDIOCF_REG_TCR 0x06 /* test control register W/O */
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#define PDAUDIOCF_REG_SCR 0x08 /* status and control, R/W (see bit description) */
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#define PDAUDIOCF_REG_ISR 0x0a /* interrupt status, R/O */
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#define PDAUDIOCF_REG_IER 0x0c /* interrupt enable, R/W */
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#define PDAUDIOCF_REG_AK_IFR 0x0e /* AK interface register, R/W */
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/* PDAUDIOCF_REG_TCR */
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#define PDAUDIOCF_ELIMAKMBIT (1<<0) /* simulate AKM music data */
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#define PDAUDIOCF_TESTDATASEL (1<<1) /* test data selection, 0 = 0x55, 1 = pseudo-random */
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/* PDAUDIOCF_REG_SCR */
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#define PDAUDIOCF_AK_SBP (1<<0) /* serial port busy flag */
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#define PDAUDIOCF_RST (1<<2) /* FPGA, AKM + SRAM buffer reset */
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#define PDAUDIOCF_PDN (1<<3) /* power down bit */
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#define PDAUDIOCF_CLKDIV0 (1<<4) /* choose 24.576Mhz clock divided by 1,2,3 or 4 */
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#define PDAUDIOCF_CLKDIV1 (1<<5)
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#define PDAUDIOCF_RECORD (1<<6) /* start capturing to SRAM */
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#define PDAUDIOCF_AK_SDD (1<<7) /* music data detected */
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#define PDAUDIOCF_RED_LED_OFF (1<<8) /* red LED off override */
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#define PDAUDIOCF_BLUE_LED_OFF (1<<9) /* blue LED off override */
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#define PDAUDIOCF_DATAFMT0 (1<<10) /* data format bits: 00 = 16-bit, 01 = 18-bit */
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#define PDAUDIOCF_DATAFMT1 (1<<11) /* 10 = 20-bit, 11 = 24-bit, all right justified */
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#define PDAUDIOCF_FPGAREV(x) ((x>>12)&0x0f) /* FPGA revision */
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/* PDAUDIOCF_REG_ISR */
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#define PDAUDIOCF_IRQLVL (1<<0) /* Buffer level IRQ */
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#define PDAUDIOCF_IRQOVR (1<<1) /* Overrun IRQ */
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#define PDAUDIOCF_IRQAKM (1<<2) /* AKM IRQ */
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/* PDAUDIOCF_REG_IER */
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#define PDAUDIOCF_IRQLVLEN0 (1<<0) /* fill threshold levels; 00 = none, 01 = 1/8th of buffer */
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#define PDAUDIOCF_IRQLVLEN1 (1<<1) /* 10 = 1/4th of buffer, 11 = 1/2th of buffer */
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#define PDAUDIOCF_IRQOVREN (1<<2) /* enable overrun IRQ */
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#define PDAUDIOCF_IRQAKMEN (1<<3) /* enable AKM IRQ */
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#define PDAUDIOCF_BLUEDUTY0 (1<<8) /* blue LED duty cycle; 00 = 100%, 01 = 50% */
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#define PDAUDIOCF_BLUEDUTY1 (1<<9) /* 02 = 25%, 11 = 12% */
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#define PDAUDIOCF_REDDUTY0 (1<<10) /* red LED duty cycle; 00 = 100%, 01 = 50% */
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#define PDAUDIOCF_REDDUTY1 (1<<11) /* 02 = 25%, 11 = 12% */
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#define PDAUDIOCF_BLUESDD (1<<12) /* blue LED against SDD bit */
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#define PDAUDIOCF_BLUEMODULATE (1<<13) /* save power when 100% duty cycle selected */
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#define PDAUDIOCF_REDMODULATE (1<<14) /* save power when 100% duty cycle selected */
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#define PDAUDIOCF_HALFRATE (1<<15) /* slow both LED blinks by half (also spdif detect rate) */
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/* chip status */
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#define PDAUDIOCF_STAT_IS_STALE (1<<0)
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#define PDAUDIOCF_STAT_IS_CONFIGURED (1<<1)
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#define PDAUDIOCF_STAT_IS_SUSPENDED (1<<2)
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struct snd_pdacf {
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struct snd_card *card;
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int index;
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unsigned long port;
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int irq;
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struct mutex reg_lock;
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unsigned short regmap[8];
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unsigned short suspend_reg_scr;
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spinlock_t ak4117_lock;
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struct ak4117 *ak4117;
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unsigned int chip_status;
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struct snd_pcm *pcm;
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struct snd_pcm_substream *pcm_substream;
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unsigned int pcm_running: 1;
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unsigned int pcm_channels;
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unsigned int pcm_swab;
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unsigned int pcm_little;
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unsigned int pcm_frame;
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unsigned int pcm_sample;
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unsigned int pcm_xor;
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unsigned int pcm_size;
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unsigned int pcm_period;
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unsigned int pcm_tdone;
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unsigned int pcm_hwptr;
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void *pcm_area;
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/* pcmcia stuff */
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struct pcmcia_device *p_dev;
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};
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static inline void pdacf_reg_write(struct snd_pdacf *chip, unsigned char reg, unsigned short val)
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{
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outw(chip->regmap[reg>>1] = val, chip->port + reg);
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}
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static inline unsigned short pdacf_reg_read(struct snd_pdacf *chip, unsigned char reg)
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{
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return inw(chip->port + reg);
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}
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struct snd_pdacf *snd_pdacf_create(struct snd_card *card);
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int snd_pdacf_ak4117_create(struct snd_pdacf *pdacf);
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void snd_pdacf_powerdown(struct snd_pdacf *chip);
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#ifdef CONFIG_PM
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int snd_pdacf_suspend(struct snd_pdacf *chip);
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int snd_pdacf_resume(struct snd_pdacf *chip);
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#endif
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int snd_pdacf_pcm_new(struct snd_pdacf *chip);
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irqreturn_t pdacf_interrupt(int irq, void *dev);
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irqreturn_t pdacf_threaded_irq(int irq, void *dev);
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void pdacf_reinit(struct snd_pdacf *chip, int resume);
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#endif /* __PDAUDIOCF_H */
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